How to detect the finish with file_put_contents() in php?

Question

In PHP, i will write (create) the file using file_put_contents($filename, $data);
It is ok, but i want to detect the finish event of process.

Curre

Answer 1

Retrieve the Content-Length header from the remote location first. You can use get_headers to do that. Like so:

$headers = get_headers($url, 1);
echo "To download: " . $headers['Content-Length'] . " bytes.
";